rtcSetGeometryUserPrimitiveCount

rtcSetGeometryUserPrimitiveCount - sets the number of primitives
  of a user-defined geometry
    

#include <embree4/rtcore.h>
void rtcSetGeometryUserPrimitiveCount(
  RTCGeometry geometry,
  unsigned int userPrimitiveCount
);
    

The rtcSetGeometryUserPrimitiveCount function sets the number of user-defined primitives (userPrimitiveCount parameter) of the specified user-defined geometry (geometry parameter).

On failure an error code is set that can be queried using rtcGetDeviceError.

[RTC_GEOMETRY_TYPE_USER]